M80C196KB

EXTERNAL CLOCK DRIVE

Symbol

Parameter

Min

Max

Units

Oscillator Frequency

M80C196KB

35

120

MHz

Oscillator Period

M80C196KB

83

286

ns

High Time

32

ns

Low Time

32

ns

Rise Time

10

ns

Fall Time

10

ns

EXTERNAL CLOCK DRIVE WAVEFORMS

271089 – 19

AC TESTING INPUT OUTPUT WAVEFORMS

271089 – 20

AC Testing inputs are driven at 24V for a Logic ‘‘1’’ and 045V for

a Logic ‘‘0’’ Timing measurements are made at 20V for a Logic

‘‘1’’ and 08V for a Logic ‘‘0’’

FLOAT WAVEFORMS

271089 – 21

For Timing Purposes a Port Pin is no Longer Floating when a

100 mV change from Load Voltage Occurs and Begins to Float

EXPLANATION OF AC SYMBOLS

Each symbol is two pairs of letters prefixed by ‘‘T’’ for time The characters in a pair indicate a signal and its

condition respectively Symbols represent the time between the two signalcondition points

Conditions

H - High

L - Low

V - Valid

X - No Longer Valid

Z - Floating

Signals

A - Address

B - BHE

C - CLKOUT

D - DATA

G - Buswidth

L - ALEADV

R- RD

W- WR WRH WRL

X - XTAL1

Y - READY

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